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A confined growth strategy to construct 3DOM SiO_(2) nanoreactor insitu embedded Co_(3)O_(4) nanoparticles catalyst for the catalytic combustion of VOCs:Superior H_(2)O and SO_(2) resistance

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Nano Research 2024年第1期17卷 207-220页

作者： Weigao Han Shilin wu Fang Dong Weiliang Han yinghao Chu Linghui Su Zhicheng Tang State Key Laboratory for Oxo Synthesis and Selective Oxidation National Engineering Research Center for Fine Petrochemical IntermediatesLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China College of Architecture and Environment Sichuan UniversityChengdu 610000China

SO_(2)poisoning is a common problem in the catalytic combustion of volatile organic compounds(VOCs).In this work,we took three-dimensionally ordered macroporous and mesoporous(3DOM)SiO_(2)as the nanoreactor to protect active sites from SO_(2)erosion in the catalytic combustion of benzene.Simultaneously,the confined growth of metal active nanoparticles in the multi-stage pore is also full of challenges.And we successfully confined Co_(3)O_(4)nanoparticles(NPs)in macroporous and mesoporous channels.Interestingly,the precursors’growth in the pore was controlled and nanoreactors with different pore sizes were prepared by adjusting the loading amount and preparation methods.It is discovered that the Co_(3)O_(4)NPs confined in 3DOM SiO_(2)nanoreactor showed superior sulfur and water resistance.Density functional theory(DFT)calculations verified that the Co-Si catalyst had high SO_(2)adsorption energy(-0.48 eV),which illustrated that SO_(2)was hard to attach to the surface of the Co-Si catalyst.The SiO_(2)nanoreactor had low SO_(2)adsorption energy(-5.15 eV),which indicated that SO_(2)was easily absorbed on SiO_(2)nanoreactor.This illustrated that the SiO_(2)nanoreactor could protect effectively active sites from SO_(2)erosion.

关键词： zeolitic imidazolate frameworks(ZIFs) Co_(3)O_(4) benzene catalytic combustion nanoreactor sulfur and water resistance

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Designing a dual-functional material with barrier anti-corrosion and photocatalytic antifouling properties using g-C_(3)N_(4) nanosheet with ZnO nanoring

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Journal of Materials Science & Technology 2022年第11期106卷 56-69页

作者： Yiqian Lv Yueqing Zheng Honglin Zhu yinghao wu Chemistry Institute for Synthesis and Green Application College of Materials Science and Chemical EngineeringNingbo UniversityNingbo 315211PR China Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of ScienceNingbo 315201PR China

As a semiconductor material with a 2 D-laminate structure, g-C_(3)N_(4)(bandwidth 2.7 e V) has a similar structure and excellent performance to graphene. However, high surface energy and photogenerated e–h recombination of g-C_(3)N_(4)seriously hinder its application in the field of marine anticorrosion and antifouling.To solve these problems, we synthesized the g-C_(3)N_(4)nanosheets decorated with Zn O nanoring via chemical etching technology. Whether the NR Zn O-CNNs have surface protection performance among the pure EP on the corrosion protection for metal substrate were investigated. The antifouling properties NR Zn OCNNs hybrid were also estimated through photocatalytic bacterial and algae resistance tests. Combined with the electrochemical results, it was found that the impedance modulus of NR Zn O-CNNs/EP within 45 days showed two orders of magnitude higher than that of pure EP in the 3.5 wt% Na Cl solution. Besides, Local electrochemical impedance spectroscopy(LEIS) further explored the anticorrosion behavior of NR Zn O-CNNs/EP coating, which indicated that the NR Zn O-CNNs/EP coating with a scratch maintained an excellent corrosion resistance between 0–24 h. Under the visible light conditions, the lifetime of photogenerated e–h was prolonged due to the formation of NR Zn O-CNNs heterojunction structure, it was observed that the antibacterial rate against Bacillus subtilis reached 100% within 8 h. An Antialgae test was performed on chlorella seawater solution, which indicated that 5 mg/m L of NR Zn O-CNNs hybrid could make chlorella sharply reduce within 4 days. Simultaneously, the corrosion protection and photocatalytic antifouling mechanisms of NR Zn O-CNNs were proposed, thus it provided a broader platform for the design of versatile marine protection materials.

关键词： g-C_(3)N_(4) ZnO nanoring Epoxy coating Anticorrosion Antifouling

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Achieving anti-corrosion and anti-biofouling dual-function self-healing coating by natural carrier attapulgite loading with 2-Undecylimidazoline

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Journal of Materials Science & Technology 2023年第17期148卷 222-234页

作者： yinghao wu Jinming Wei Xiaolu Shi Wenjie Zhao Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Ningbo New Material Testing and Evaluation Center Co. LtdNingbo 315048China

In the marine environment,the protective coatings face serious corrosion and biofouling problem,lim-itations,and challenges that made self-healing coatings unable to perform both anti-corrosion and anti-biofouling dual-function at the same time.Here we constructed the corrosion resistance and anti-biofouling self-healing coating by integrating nano-containers into the coating matrix,the 2-Undecylimidazoline(ULM)acted as a corrosion inhibitor and anti-biofouling dual-functional agent which was loaded on the natural container attapulgite(ATP).To obtain high healing efficiency,a fluidity-driven self-healing silicone oil coating was thickened by fibrous ATP to enhance its stability,which played a key role in the self-healing and long-term corrosion resistance.The self-healing time of ULM@ATP rein-forced oil coating was 4 s at least in the air and up to 30 s in the 1 M HCl solution.Meanwhile,the ULM@ATP can significantly enhance the corrosion resistance of the self-healing coating,with the best effect achieved when the content of ULM@ATP was 5 wt.%.The impedance modulus of ULM@ATP-2 still reached 1.62×10^(8)Ωcm^(2) after 480 immersion in 3.5 wt.%NaCl solution,which is 3 orders of magnitude high than pure Oil coating(2.17×10^(5)Ωcm^(2)).The restructure of the ATP network and the release of ULM could largely inhibit the corrosion of metal.The continuous open circuit potential of the compos-ite coating performed the potentially infinite self-healing capacity.The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability.This anti-corrosion and anti-biofouling(the surface coverage of adhered chlorella decreased 96.88%)dual-function strategy of self-healing coatings could be also realized by many other porous nano-materials or function modifications.The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability.This anti-corrosion and anti-biofouling dual-function strategy of self-healing co

关键词： Self-healing Active corrosion resistance Anti-biofouling Attapulgite

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Computational Assessment of Protein–protein Binding Affinity by Reversely Engineering the Energetics in Protein Complexes

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Genomics, Proteomics & Bioinformatics 2021年第6期19卷 1012-1022页

作者： Bo Wang Zhaoqian Su yinghao wu Department of Systems and Computational Biology Albert Einstein College of MedicineBronxNY 10461USA

The cellular functions of proteins are maintained by forming diverse complexes.The stability of these com-plexes is quantified by the measurement of binding affinity,and mutations that alter the binding affinity can cause various diseases such as cancer and diabetes.As a result,accurate estimation of the binding stability and the effects of mutations on changes of binding affinity is a crucial step to understanding the biological functions of proteins and their dysfunctional consequences.It has been hypothesized that the stability of a protein complex is dependent not only on the residues at its binding interface by pairwise interactions but also on all other remaining residues that do not appear at the binding interface.Here,we computationally reconstruct the binding affinity by decomposing it into the contributions of interfacial residues and other non-interfacial residues in a protein complex.We further assume that the contributions of both interfacial and non-interfacial residues to the binding affinity depend on their local structural environments such as solvent-accessible surfaces and secondary structural types.The weights of all corresponding parameters are optimized by Monte-Carlo simulations.After cross-validation against a large-scale dataset,we show that the model not only shows a strong correlation between the absolute values of the experimental and calculated binding affinities,but can also be an effective approach to predict the relative changes of binding affinity from mutations.Moreover,we have found that the optimized weights of many parameters can capture the first-principle chemical and physical features of molecular recognition,therefore re-versely engineering the energetics of protein complexes.These results suggest that our method can serve as a useful addition to current computational approaches for predicting binding affinity and understanding the molecular mechanism of protein–protein interactions.

关键词： Protein-protein interaction Binding affinity Non-interfacial residue Knowledge-based potential Monte-Carlo simulation

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抵近过程中的异面非合作目标双视线协同定位算法

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西北工业大学学报 2024年第2期42卷 197-204页

作者：吴英浩郁丰刘佳鑫南京航空航天大学航天学院江苏南京211106 空间光电探测与感知工业和信息化部重点实验室江苏南京211106

针对接近异面非合作目标过程中的目标定位问题,提出了一种基于双视线协同仅测角的目标定位算法,并通过优化接近构型来提高目标定位的精度。提出了一种仅利用视线测量的双星协同定位方案,并设计了基于扩展卡尔曼滤波器的目标定位算法;通... 详细信息

针对接近异面非合作目标过程中的目标定位问题,提出了一种基于双视线协同仅测角的目标定位算法,并通过优化接近构型来提高目标定位的精度。提出了一种仅利用视线测量的双星协同定位方案,并设计了基于扩展卡尔曼滤波器的目标定位算法;通过引入正态分布交叉算子、可变变异分布指数和模拟灾变3种方式,改进了NSGA-Ⅱ算法,并将其用于接近构型的优化;数值仿真结果表明,提出的算法克服了传统算法易陷入局部收敛和收敛速度慢的问题,且经过构型优化后,目标定位的精度得到了提高。

关键词：仅测角目标定位改进NSGA-Ⅱ 构型优化

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基于Roe-Siegmund循环内聚力模型焊趾疲劳裂纹萌生仿真

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焊接学报 2024年第3期45卷 61-67,I0006页

作者：赵秋唐琨李英豪吴维青福州大学福州350116 福州大学福建省高校测试中心福州350116

为建立焊趾疲劳裂纹萌生行为仿真方法,基于Roe-Siegmund循环内聚力模型对ABAQUS进行二次开发,形成用于反映疲劳累积损伤的VUMAT子程序,依据文献方法及试验数据获取Q345焊接区域材料的内聚力参数,通过Voronoi图法和内聚力单元法生成具有... 详细信息

为建立焊趾疲劳裂纹萌生行为仿真方法,基于Roe-Siegmund循环内聚力模型对ABAQUS进行二次开发,形成用于反映疲劳累积损伤的VUMAT子程序,依据文献方法及试验数据获取Q345焊接区域材料的内聚力参数,通过Voronoi图法和内聚力单元法生成具有疲劳累积损伤特性和晶粒特征的微观模型,并与宏观对接焊缝模型合并,进行多尺度疲劳裂纹萌生仿真模拟,获得裂纹萌生路径、临界循环次数及晶粒力学响应特征.结果表明,此方法能够自发地选择符合实际情况的裂纹萌生位置以及短裂纹扩展路径,完成对焊接区域材料微观断裂过程的模拟,不同仿真组获取的临界循环次数存在于一定的分布范围内,模型中的累积内聚力长度需通过试验数据进行拟合.

关键词：焊趾裂纹萌生循环内聚力模型内聚力单元法 Voronoi图法

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权变框架下我国能源与粮食安全:一个实时测度模型

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中国软科学 2024年第4期 154-165页

作者：朱庆缘孟波武良鹏潘应浩吴杰南京航空航天大学经济与管理学院能源软科学研究所江苏南京211106 南京信息工程大学应急与风险管理研究院江苏南京210044 中国科学技术大学管理学院安徽合肥230026

在逆全球化思潮抬头、局部冲突频发、全球性气候问题加剧多重压力叠加下,保障国家能源和粮食安全成为应对世界动态变革期间的重要任务。然而,当前多体现于基于底线思维的供应安全无法反映“安全”内涵的实时变化。基于函数型数据分析(F... 详细信息

在逆全球化思潮抬头、局部冲突频发、全球性气候问题加剧多重压力叠加下,保障国家能源和粮食安全成为应对世界动态变革期间的重要任务。然而,当前多体现于基于底线思维的供应安全无法反映“安全”内涵的实时变化。基于函数型数据分析(FDA)方法,构造权变框架下的安全评估体系,动态评估了我国30个省份2003—2019年的能源和粮食安全水平,并使用Function-on-Function(FOF)回归模型分析能源安全对粮食安全的实时影响。研究发现:能源安全的能源供应与运输安全和经济安全两个维度占比最大,环境安全比重逐渐提高;粮食安全的供应安全维度所占比重最大,生态安全的相关指标权重有所上升;随着能源安全与粮食安全内涵重心的改变,两者之间存在变动的非线性关系。

关键词：能源安全粮食安全函数型数据分析动态权重

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直立式机械排烟临界排烟口高度

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安全与环境学报 2024年第5期24卷 1849-1854页

作者：钟委吴英昊田英高子鹤郑州大学力学与安全工程学院郑州450001 郑州大学土木工程学院郑州450001

为改善地铁站台的排烟效果,提出了一种在排烟管道顶部上接风管的新型直立式机械排烟。通过数值模拟分析地铁站台火灾时采用直立式机械排烟的效果。结果表明:采用上接风管的直立式排烟相比于排烟管道顶面排烟具有明显优势,其排热量可增加... 详细信息

为改善地铁站台的排烟效果,提出了一种在排烟管道顶部上接风管的新型直立式机械排烟。通过数值模拟分析地铁站台火灾时采用直立式机械排烟的效果。结果表明:采用上接风管的直立式排烟相比于排烟管道顶面排烟具有明显优势,其排热量可增加14.51%;直立式排烟存在一个临界排烟口高度,当排烟口高度较低时无法排出顶棚下方的高温烟气,而当排烟口高度超过该临界高度后,受到顶棚的限制其排烟效果反而会下降;临界排烟口高度与排烟风速无关,但受排烟口边长的影响,且在临界高度时排烟口与顶棚间的距离近似等于排烟口边长的一半。

关键词：安全工程地铁站台直立式机械排烟临界高度排烟口尺寸

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基于PD-NOMA的人员监控图像传输算法

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计算机工程 2024年第6期50卷 266-275页

作者：吴凡徐朝农邹英豪中国石油大学(北京)信息科学与工程学院北京102249

危险区域人员监控具有摄像节点密度高、传输实时性和图像质量要求高的特点。功率域非正交多址接入(PD-NOMA)技术可以支持多路并行传输,有利于在密集传输场景下提升传输实时性,而多摄像节点协同有利于提高图像质量。在面向危险区域人员... 详细信息

危险区域人员监控具有摄像节点密度高、传输实时性和图像质量要求高的特点。功率域非正交多址接入(PD-NOMA)技术可以支持多路并行传输,有利于在密集传输场景下提升传输实时性,而多摄像节点协同有利于提高图像质量。在面向危险区域人员监控的PD-NOMA摄像网络中,提出通过多图融合的人员监控图像传输算法,以实现高质量监控。首先,定义了图像的“单人信息量”这一关键术语,它反映了图像中单个人员被准确识别的概率;其次,基于摄像节点之间的位置关系定义了多摄像节点拍摄到的单个人员的融合图像信息量;最后,在满足传输实时性要求以及图像中所有人员均可识别的前提下,以最大化融合图像信息量为目标,计算以摄像节点的图像分辨率和无线发射功率为控制变量的实时传输调度方案。实验结果表明,当实时传输上限为0.4 s时,基于PD-NOMA的传输调度方案传输信息量比传统传输方案提高了46.4%,使得图像中人员识别概率从0.8549提升至0.8919。

关键词：功率域非正交多址接入人员监控传输实时性图像信息量图像融合

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曳引式电梯轿厢超重量装潢的危害

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中国电梯 2024年第5期35卷 65-67页

作者：姚玲吴英豪刘源西安特种设备检验检测院

分析了曳引式电梯轿厢超重量装潢后，当平衡系数小于0.40时存在增大电动机功率消耗、降低电梯曳引能力、乘梯舒适性变差等危害；当平衡系数范围为0.40～0.50时存在破坏曳引机垂直度、加剧钢丝绳磨损、破坏安全部件匹配度等危害。同时，... 详细信息

分析了曳引式电梯轿厢超重量装潢后，当平衡系数小于0.40时存在增大电动机功率消耗、降低电梯曳引能力、乘梯舒适性变差等危害；当平衡系数范围为0.40～0.50时存在破坏曳引机垂直度、加剧钢丝绳磨损、破坏安全部件匹配度等危害。同时，给出避免轿厢超重量装潢的建议，呼吁相关责任方齐抓共管，防范和整改轿厢超重量装潢问题，为电梯的安全运行提供保障。

关键词：曳引式电梯轿厢超重量装潢危害平衡系数

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